The Zett's 'clams', I assume are freshwater mussels and not invasive species of zebra mussels and corbicula (Asian clam). Native mussels are filter feeders each one filtering gallons of water each day to eat / remove silt, bacteria, and quite a bit of plankton thus they compete with fish smaller than fingerling size. Filtering the water should make the water clearer depending on how many mussels are present. Most freshwater mussel species in the central US are mostly stream dwelling species. Only a few of them are pond dwellers such as in order of most common in ponds: 'giant floater' Pyganodon grandis, 'fatmucket' Lampsilis siliquoidea, and 'eastern pond mussel' Ligumia nasuta.
The RES should eat the young clams less than 0.5" long.
Last edited by Bill Cody; 06/29/16 07:57 PM.
